Python NameError: name is not defined

Question

I have a python script and I am receiving the following error:

Traceback (most recent call last):   File "C:\Users\Tim\Desktop\pop-erp\test.py", line 1, in <module>     s = Something()   NameError: name 'Something' is not defined 

Here is the code that causes the problem:

s = Something() s.out()  class Something:     def out():         print("it works") 

This is being run with Python 3.3.0 under Windows 7 x86-64.

Why can't the Something class be found?

Answer 1

Define the class before you use it:

class Something:     def out(self):         print("it works")  s = Something() s.out() 

You need to pass self as the first argument to all instance methods.